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논문 기본 정보

자료유형
학술대회자료
저자정보
강상현 (부산대학교) 이주형 (부산대학교) 진상은 (부산대학교)
저널정보
대한인간공학회 대한인간공학회 학술대회논문집 2019 대한인간공학회 추계학술대회
발행연도
2019.10
수록면
69 - 73 (5page)

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초록· 키워드

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Objective: The goal of current study was to investigate the effects of sit-stand desks on physical workload and cognitive performance under dual task paradigm. Background: Six of seven previous studies suggested that there is no difference in cognitive performance between the sitting desk and standing desk, but they only tested cognitive abilities without any primary task that may not tap into enough cognitive resource. Method: Total 12 participants visited two times for testing both sitting and standing workstations, and asked to play the Tetris game (primary task) for 40 minutes. The experimental protocol consisted of four 10 min sessions, and each session had level of difficulty in primary task including two easy levels and two difficult levels. The dependent variables included three cognitive tests (secondary task), kinematic and kinetic measures, captured about every 5 min. Results: Head flexion angle and lumbar flexion angle were significantly better in standing (more neutral) than sitting. In addition, the movement of center of pressure (CoP) was significantly bigger in standing than sitting, the but complexity of movement captured by the sample entropy was significantly smaller in the standing desk suggesting that the cognitive load paid for standing is greater. In line with this, cognitive performance showed a significant difference according to the workstation condition, but there was no interaction effect. Specifically, cognitive performance decreased under the standing desk as compared to the sitting desk. These findings provide an evidence that the standing posture leads to increase in cognitive distraction because of having a higher degree of freedom in body segments and consequently bigger cognitive load. Conclusion: While using a standing desk the physical workloads can be reduced, but the cognitive load and distraction could be increased.

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ABSTRACT
1. Introduction
2. Method
3. Results and Discussion
4. Conclusion
References

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